- AL-6XN Valve
- AL-6XN Flange
- AL-6XN pipe fitting
- AL-6XN angle bar
- AL-6XN pipe
AL-6XN
Production specification
Data center describes many of the common steel models, we can not determine the company's warehouse has all types of steel products inventory or raw materials.
Steel Pipe: 1 - 1300mm, also can be customed.
Pipe fitting Size: 1/8 inch - 80 inch (DN6 - DN2000)
Flange Size: DN6 - DN2000
Lenth: Any lenth based on the customer's requirement.
C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni |
---|---|---|---|---|---|---|
0.030 | 1.00 | 2.00 | 0.040 | 0.030 | 20.0-22.0 | 23.5-25.5 |
Mo | Al | Cu | Nb | Ti | V | Ce |
6.0-7.0 | ||||||
N | Co | Pb | B | Other | ||
0.18-0.25 | Fe... | |||||
AL-6XN super-austenitic stainless steel (UNS N08367)
· 6.3% molybdenum
· Over 25 years of proven seawater service
· Practical immunity to chloride stress cracking
· 50% stronger than stainless
· ASME coverage up to 800°F
· Easily welded
· Available in ALL product forms
AL-6XN® alloy (UNS N08367) is a low carbon, high purity, nitrogen-bearing "super-austenitic" stainless alloy. The AL6XN alloy was designed to be a seawater resistant material and has since been demonstrated to be resistant to a broad range of very corrosive environments. The high strength and corrosion resistance of the AL6XN alloy make it a better choice than the conventional duplex stainless steels and a cost effective alternative to more expensive nickel-base alloys where excellent formability, weldability, strength and corrosion resistance are essential.
Performance Profile
The levels of chromium, molybdenum and nitrogen in AL-6XN all serve to provide resistance to acidic oxidizing chloride solutions previously achieved only by the nickel base alloys. High nickel (24%) and molybdenum (6.3%) contents make AL-6XN a solution to chloride ion stress corrosion cracking. Because of its nitrogen content, AL-6XN has greater tensile strength than common austenitic stainlesses, while retaining high ductility and impact strength. The ASME allowable stresses for AL-6XN are up to 75% higher than for 316L stainless, and more than twice those for the copper-nickel alloys.
Specifications
ASME B-31.1 Case 155-1, ASME SA 182, ASME SA 240, ASME SA 249, ASME SA 312, ASME SA 479, ASME SB 276, ASME SB 366, ASME SB 462, ASME SB 564, ASME SB 675, ASME SB 688, ASME SB 691, ASME SB-366 Code Case N-438-3
ASTM A 182, ASTM A 240, ASTM A 249, ASTM A 312, ASTM A 479, ASTM B 366, ASTM B 462, ASTM B 472, ASTM B 564, ASTM B 675, ASTM B 676, ASTM B 688, ASTM B 691, ASTM B 804
UNS N08367
Inventory
AL-6XN Billet, AL-6XN Concentric Reducers, AL-6XN Fittings, AL-6XN Forged Billet, AL-6XN Forgings, AL-6XN Pipe, AL-6XN Plate, AL-6XN Round Bar, AL-6XN Sheet, AL-6XN Stub Ends, AL-6XN Tees, AL-6XN Welding Products
Common Trade Names
AL6XN, UNS N08367
Physical Properties
Density: 0.291 lb/in 3
Melting Point: 2410-2540°F
Electrical Resistivity: 535 Ohm-circ mil/ft
Temperature, °F |
70 |
200 |
300 |
400 |
600 |
700 |
800 |
Coefficient* of Thermal Expansion, in/in°F x 10-6 |
- |
7.9 |
8.3 |
8.4 |
8.6 |
8.7 |
8.8 |
Thermal Conductivity
|
6.7 |
7.5 |
8.1 |
8.7 |
10.0 |
10.6 |
11.2 |
Modulus of Elasticity, Dynamic psi x 10 6 |
28.3 |
27.4 |
- |
26.1 |
24.8 |
- |
23.4 |
* 70°F to indicated temperature.
Mechanical Properties
Minimum Specified Properties, ASME SB-688 Plate
Ultimate Tensile Strength, ksi |
95 |
0.2% Yield Strength, ksi |
45 |
Elongation |
30 |
Hardness MAX, HRC |
30.5 |
Typical Tensile Properties, Plate
Temperature, °F |
-450 |
-320 |
70 |
200 |
400 |
600 |
800 |
1000 |
Ultimate Tensile Strength, ksi |
218.0 |
196.0 |
108.0 |
99.9 |
90.3 |
86.0 |
87.0 |
83.6 |
0.2% Yield Strength, ksi |
142.0 |
107.0 |
53.0 |
49.4 |
40.4 |
36.3 |
36.0 |
34.0 |
Elongation, % |
36 |
49 |
47 |
47 |
46 |
47 |
48 |
50 |
Charpy Impact V-notch, ft-lbs |
322* |
85 |
140 |
-- |
-- |
-- |
-- |
-- |
*KIC Fracture Toughness
ASME Maximum Allowable Stresses, Section VIII, Division 1, ksi
|
200°F |
400°F |
600°F |
800°F |
AL-6XN Alloy |
27.1 |
24.6 |
23.3 |
22.6 |
316L |
20.0 |
19.3 |
17.0 |
15.9 |
Alloy 400 |
18.7 |
18.7 |
18.7 |
15.0 |
Fabrication
The low carbon and high nitrogen contents in AL-6XN alloy (UNS N08367) minimize the precipitation of carbides and secondary phases that can occur during welding. Therefore as-welded assemblies can be placed in service, provided a suitable over-matched filler metal, such as alloy 625 is used. AL6XN alloy can be welded in the field using procedures similar to those used with other austenitic stainless steels.
Rolled Alloys AL-6XN (UNSN08367) Fabrication Guide gives welding parameters, welding joint designs, machining, bending and forming data.
Corrosion Resistance
AL-6XN has excellent corrosion resistance in high chloride environments as well as many acids. Below is a quick summary of the critical pitting and crevice corrosion resistance compared to many other alloys. AL-6XN has improved properties over stainless steels and all duplex grades. The practical immunity to chloride stress corrosion cracking has pushed AL-6XN (UNS N08367) into many seawater applications including seawater reverse osmosis. The resistance to acid and chloride environments is proven by over 20 years of service in the flue gas desulfurization process at coal fired electric power plants.
Alloy |
% Mo |
CCCT, °F |
CPT, °F |
PREN |
AL-6XN |
6.3 |
110 |
172 |
44 |
Category | High alloy steel |
Class | High temperature corrosion Alloy steel |
Type | Austenitic standard |
Common Names | Chromium-Manganese-AL-6XN |
Designations | Execution standard: ASTM...UNS ...AISI..DIN EN... DIN SEW...ISO...JIS...NF...BS...GB... |
High temperature alloy refers to iron, nickel, cobalt as base, can in the 600-1200 ℃ high temperature and must stress under the action of a kind of metal materials long-term work; And it has higher temperature strength, good resistance to oxidation and corrosion resistance, good fatigue performance, the fracture toughness, and other comprehensive performance. High temperature alloy for a single austenitic organization, in all kinds of temperature has good stability and reliability of the organizations use, based on these properties, and high temperature alloy alloying degree is higher, also called "super alloys", it is widely used in aviation, spaceflight, petroleum, chemical industry, ships is a kind of important material. According to the matrix element to points, high temperature alloy and divided into iron base, nickel and cobalt base, high temperature alloy etc. Iron base high temperature alloy using temperature normally only up to 750 ~ 780 ℃, in the higher temperature of the heat used parts, used the nickel and refractory metal based
1;High temperature alloy with high temperature strength.
2;Good resistance to oxidation and corrosion resistance performance.
3;Good fatigue performance, the fracture toughness, plastic.
Organizational characteristics:
High temperature alloy for a single (austenitic) matrix organization, in all kinds of temperature has good stability and reliability of the organization to use.
High temperature alloy quality requirements:
External quality: external contour shape, size accuracy, the surface defect cleaning method.
Internal quality: chemical composition, structure, mechanical and physical and chemical properties.
Mechanical properties: room temperature and high temperature tensile properties and impact toughness, high temperature lasting several creep properties, hardness and high weeks and weeks, creep, fatigue performance under the mutual action of fatigue and the mechanical properties, thermal and corrosion resistance to oxidation.
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